Bendy bone ends don't follow rig, also 'stretch to' issues
You might add your blend file to see whats wrong: http://pasteall.org/blend/
I assume that you didnt apply scale to the model before doing automic weights (that could explain the weird lower picture). Make sure you parent the bones correctly. If you find it difficult to make a skeleton start with rigify and remove the bones you dont need, then in the end turn some of the bones in bendy bones.